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tweaks: inject the entire burst of bytes at once into the edit buffer

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Not doing it characterwise saves a reallocation, a memmove(), several
checks, and an update_undo() for each character over one.

This has been tested by temporarily setting 'bracketed_paste = FALSE'
instead of 'bracketed_paste = TRUE' in convert_sequence() in winio.c,
and then pasting stuff into nano.
This commit is contained in:
Benno Schulenberg 2020-02-17 13:23:15 +01:00
parent f700b422be
commit b3faf353c9
1 changed files with 12 additions and 20 deletions
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32
src/nano.c
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@ -1639,8 +1639,6 @@ void process_a_keystroke(void)
void inject(char *burst, size_t count)
{
size_t current_len = strlen(openfile->current->data);
size_t index = 0;
int charlen;
#ifndef NANO_TINY
size_t original_row = 0, old_amount = 0;
@ -1651,8 +1649,8 @@ void inject(char *burst, size_t count)
}
#endif
while (index < count) {
/* Encode an embedded NUL byte as 0x0A. */
for (size_t index = 0; index < count; index++)
if (burst[index] == '\0')
burst[index] = '\n';
@ -1665,28 +1663,23 @@ void inject(char *burst, size_t count)
add_undo(ADD, NULL);
#endif
charlen = char_length(burst + index);
/* Make room for the new character and copy it into the line. */
/* Make room for the new bytes and copy them into the line. */
openfile->current->data = charealloc(openfile->current->data,
current_len + charlen + 1);
memmove(openfile->current->data + openfile->current_x + charlen,
current_len + count + 1);
memmove(openfile->current->data + openfile->current_x + count,
openfile->current->data + openfile->current_x,
current_len - openfile->current_x + 1);
strncpy(openfile->current->data + openfile->current_x,
burst + index, charlen);
burst, count);
current_len += charlen;
index += charlen;
openfile->totsize++;
openfile->totsize += mbstrlen(burst);
set_modified();
#ifndef NANO_TINY
/* Note that current_x has not yet been incremented. */
if (openfile->current == openfile->mark &&
openfile->current_x < openfile->mark_x)
openfile->mark_x += charlen;
openfile->mark_x += count;
/* When the cursor is on the top row and not on the first chunk
* of a line, adding text there might change the preceding chunk
@ -1698,11 +1691,7 @@ void inject(char *burst, size_t count)
}
#endif
openfile->current_x += charlen;
#ifndef NANO_TINY
update_undo(ADD);
#endif
openfile->current_x += count;
/* If we've added text to the magic line, create a new magic line. */
if (openfile->filebot == openfile->current && !ISSET(NO_NEWLINES)) {
@ -1711,12 +1700,15 @@ void inject(char *burst, size_t count)
refresh_needed = TRUE;
}
#ifndef NANO_TINY
update_undo(ADD);
#endif
#ifdef ENABLE_WRAPPING
/* If text gets wrapped, the edit window needs a refresh. */
if (ISSET(BREAK_LONG_LINES) && do_wrap())
refresh_needed = TRUE;
#endif
}
#ifndef NANO_TINY
/* If the number of screen rows that a softwrapped line occupies has